<template>
  <div class="todo-header">
    <input type="text" placeholder="请输入你的任务名称，按回车键确认" @keyup.enter="add"/>
  </div>
</template>

<script>
import {nanoid} from 'nanoid';

export default {
  name: "MyHeader",
  props: ['addTodos'],
  methods: {
    add(e) {
      if (!e.target.value) {
        return;
      }
      // 将用户输入包装成todo对象
      const todoObj = {
        id: nanoid(),
        title: e.target.value.trim(),
        done: false
      }
      // 通过props传递函数来获取子组件中数据
      this.addTodos(todoObj);
      e.target.value = '';
    }
  }
}
</script>

<style scoped>
/*header*/
.todo-header input {
  width: 560px;
  height: 28px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 7px;
}

.todo-header input:focus {
  outline: none;
  border-color: rgba(82, 168, 236, 0.8);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
}
</style>